Home / 13,776.96-19,011.78-7,809.18

Finding the Fourth Proportional to 13,776.96, 19,011.78 and 7,809.18

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Solution

The fourth proportional to 13,776.96, 19,011.78 and 7,809.18 is: 10,776.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.96 : 19,011.78 = 7,809.18 : x
  2. Step 2: Convert to fraction form
    13,776.96/19,011.78 = 7,809.18/x
  3. Step 3: Cross multiply
    13,776.96x = 19,011.78 × 7,809.18
  4. Step 4: Simplify right side
    13,776.96x = 148,466,412.14
  5. Step 5: Solve for x
    x = 148,466,412.14/13,776.96
  6. Step 6: Final answer
    x = 10,776.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.